1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37af8a9fe9f213aad1f74bdf5c46b1bed52d26b32afb42c89fc3c8078ea88286. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/42a4a573-0ad7-45ae-9411-5fe3703b3a2f.json and https://artists.proofprofile.net/proofs/artist/42a4a573-0ad7-45ae-9411-5fe3703b3a2f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44e53f17f2e31004765a86aaf5c2cf2242235eb361cf8e3c185eee4039eb412. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP960500026.
Listen To The Drums - Jazzanova Rmx / Dixon Edit
Listen to the Drums - Christian Prommer DrumLesson Remix Dub
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6305418949ec2291a87de9a40c8d1322426c3843b25272135bcf0300b838c0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP960600264.
Now That I'm Free feat. RZA - Instrumental
Now That I'm Free feat. RZA - A Cappella
I Cannot Think - English Gentlemen Rework Extended
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41d1b845cbad77c77a77fd4dcf6508090ed17d9484d1d2f1aca41157dd833e9. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR27Q1180002.
I Cannot Think - English Gentlemen Rework
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843e07040d894ab27bc5ffd7120e17dac07142d3a8cbfd68e684a961e563a0c3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRIDO1910028.
Listen to the Drums - Christian Prommer's Drumlesson Remix